I've experimented a bit with it. I found that you can get a smoother finish in a few ways:

- try the textured roller from the paint store. They are less severe than the one from kiwi grip
- make multiple passes. Many passes seem to beak it up a bit and soften the peaks.
- less pressure ... Seems counter intuitive but I found that less pressure softens the peaks as well. Firm pressure seems to accentuate the peaks as the goo is squeezed and stretched by the roller.
- if all else fails, you once dried, you can sand it lightly (or aggressively) to get the effect you prefer.

Do experiment, i used the "A" side of some plywood and taped off areas with differnt effects to evaluate after it dried.

youll find the combination of roller type, pressure and passes that gives you the result you like.

+1 on the above.

It also depends how much paint you put on. Less paint lower ridges. You use a ladle or something similar to "drop" the paint then spread with a serrated spatula. The groove size of the serrated spatula is the amount of paint you leave after spreading. Try on a separate piece of plywood and use the West system serrated spatula to spread - the only one I could find with two "settings".